﻿Vol. 
  47 
  

  

  No. 
  2 
  

  

  BULLETIN 
  

  

  OF 
  THE 
  

  

  TORREY 
  BOTANICAL 
  CLUB 
  

  

  FEBRUARY, 
  1920 
  

  

  Notes 
  on 
  Rosaceae— 
  XII 
  

  

  Per 
  Axel 
  Rydberg 
  

  

  Roses 
  of 
  northeastern 
  North 
  America 
  

  

  By 
  northeastern 
  North 
  America 
  is 
  meant 
  the 
  parts 
  of 
  the 
  

  

  M 
  

  

  Woods 
  

  

  It 
  comprises 
  about 
  the 
  same 
  region 
  as 
  that 
  covered 
  by 
  Gray's 
  

   and 
  Britton's 
  manuals, 
  except 
  the 
  extreme 
  western 
  portion 
  

   included 
  in 
  the 
  latter. 
  

  

  As 
  the 
  genus 
  Rosa 
  is 
  too 
  large 
  to 
  be 
  treated 
  in 
  one 
  paper, 
  my 
  

   intention 
  has 
  been 
  to 
  discuss 
  the 
  different 
  species 
  according 
  to 
  

   their 
  distribution, 
  in 
  six 
  or 
  seven 
  articles. 
  One 
  of 
  these 
  articles, 
  

   entitled 
  "Roses 
  of 
  California 
  and 
  Nevada,"* 
  has 
  already 
  been 
  

  

  Mountain 
  

  

  t 
  

  

  monogra 
  

  

  Flora.J 
  There 
  is, 
  therefore, 
  no 
  need 
  of 
  giving 
  full 
  descriptions 
  

   or 
  of 
  citing 
  lists 
  of 
  synonyms. 
  For 
  the 
  sake 
  of 
  those 
  who 
  do 
  

   not 
  have 
  access 
  to 
  the 
  later 
  publication, 
  it 
  may 
  be 
  desirable 
  to 
  

   include 
  keys 
  to 
  the 
  species. 
  The 
  articles 
  will 
  otherwise 
  contain 
  

   only 
  such 
  notes 
  as 
  could 
  not 
  be 
  included 
  in 
  the 
  North 
  American 
  

  

  r 
  

  

  Flora 
  • 
  

  

  * 
  Bull. 
  Torrey 
  Club 
  44: 
  65-84. 
  19 
  17. 
  

  

  t 
  Flora 
  of 
  the 
  Rocky 
  Mountains 
  and 
  adjacent 
  plains. 
  New 
  York. 
  1917. 
  

   t 
  N. 
  Am. 
  Flora 
  22: 
  483-533. 
  

   [The 
  Bulletin 
  for 
  January 
  (47: 
  1-44, 
  pi. 
  i) 
  was 
  issued 
  February 
  18, 
  1920.} 
  

  

  45 
  

  

  